WGU C175/D426 DATA MANAGEMENT
FOUNDATIONS OA EXAM NEWEST 2026
ACTUAL EXAM 2 LATEST VERSIONS 300
QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (100%
CORRECT AND VERIFIED
ANSWERS)|ALREADY GRADED A+
high processing speeds - ANSWER✔️In organizations that generate large number of transactions,
are often a top priority in database design.
solid - ANSWER✔️The Crow's Foot notation depicts the strong relationship with a(n) _ line
between the entities.
derived - ANSWER✔️The decision to store attributes in database tables depends on the
processing requirements and the constraints placed on a particular application.
unary - ANSWER✔️A relationship exists when an association is maintained within a single
entity.
,weak - ANSWER✔️A entity has a primary key that is partially or totally derived from the parent
entity in the relationship.
classification - ANSWER✔️A relationship is difficult to establish if only one side of the
relationship is known.
Attributes - ANSWER✔️are characteristics of entities.
required - ANSWER✔️A(n) attribute is an attribute that must have a value.
relationships - ANSWER✔️Identifying the attributes of entities helps in the better understanding
of among entities.
Documentation - ANSWER✔️not only helps database designers to stay on track during the design
process, it also enables them to pick up the design thread when the time comes to modify the
design.
participation - ANSWER✔️Failure to understand the distinction between mandatory and optional
_ _ in relationships might yield designs in which awkward (and unnecessary) temporary rows
(entity instances) must be created just to accommodate the creation of required entities.
rectangle - ANSWER✔️The Chen notation identifies a weak entity by using a double-walled
entity.
optional - ANSWER✔️Participation is if one entity occurrence does not require a corresponding
entity occurrence in a particular relationship.
existence - ANSWER✔️A weak entity must be dependent.
recursive - ANSWER✔️If an employee within an EMPLOYEE entity has a relationship with
itself, that relationship is known as a relationship.
ternary - ANSWER✔️A relationship exists when three entities are associated.
minimum - ANSWER✔️When indicating cardinality, the first value represents the number of
associated entities.
primary key - ANSWER✔️The concept of relationship strength is based on how the of a related
entity is defined.
single-valued - ANSWER✔️A person's Social Security number would be an example of a(n)
attribute.
, dashed line - ANSWER✔️A derived attribute is indicated in the Chen notation by a that connects
the attribute and an entity.
composite - ANSWER✔️A attribute can be further subdivided to yield additional attributes.
anomalies - ANSWER✔️A table that displays data redundancies yields .
4NF (fourth normal form) - ANSWER✔️In the , no row may contain two or more multivalued
facts about an entity.
diagram - ANSWER✔️Dependencies can be identified with the help of a dependency .
DKNF - ANSWER✔️Of the following normal forms, is mostly of theoretical interest.
Data inconsistency - ANSWER✔️Data inconsistency exists when different versions of the same
data appear in different places.
application - ANSWER✔️A(n) application might be written by a programmer or it might be
created through a DBMS utility program.
Knowledge - ANSWER✔️Knowledge is the body of information and facts about a specific
subject.
semistructured - ANSWER✔️An XML database supports the storage and management of
semistructured XML data.
True - ANSWER✔️The only way to access the data in a database is through the DBMS.
multiuser - ANSWER✔️A workgroup database is a(n) multiuser database.
the data always yields consistent results. - ANSWER✔️Data is said to be verifiable if the data
always yields consistent results.
single-user - ANSWER✔️A desktop database is a single-user database.
Data integrity - ANSWER✔️Data integrity is defined as the condition in which all of the data in
the database are consistent with the real-world events and conditions.
False - ANSWER✔️Corporations use only structured data.
Extensible Markup Language (XML) - ANSWER✔️XML is a special language used to represent
and manipulate data elements in a textual format.
FOUNDATIONS OA EXAM NEWEST 2026
ACTUAL EXAM 2 LATEST VERSIONS 300
QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES (100%
CORRECT AND VERIFIED
ANSWERS)|ALREADY GRADED A+
high processing speeds - ANSWER✔️In organizations that generate large number of transactions,
are often a top priority in database design.
solid - ANSWER✔️The Crow's Foot notation depicts the strong relationship with a(n) _ line
between the entities.
derived - ANSWER✔️The decision to store attributes in database tables depends on the
processing requirements and the constraints placed on a particular application.
unary - ANSWER✔️A relationship exists when an association is maintained within a single
entity.
,weak - ANSWER✔️A entity has a primary key that is partially or totally derived from the parent
entity in the relationship.
classification - ANSWER✔️A relationship is difficult to establish if only one side of the
relationship is known.
Attributes - ANSWER✔️are characteristics of entities.
required - ANSWER✔️A(n) attribute is an attribute that must have a value.
relationships - ANSWER✔️Identifying the attributes of entities helps in the better understanding
of among entities.
Documentation - ANSWER✔️not only helps database designers to stay on track during the design
process, it also enables them to pick up the design thread when the time comes to modify the
design.
participation - ANSWER✔️Failure to understand the distinction between mandatory and optional
_ _ in relationships might yield designs in which awkward (and unnecessary) temporary rows
(entity instances) must be created just to accommodate the creation of required entities.
rectangle - ANSWER✔️The Chen notation identifies a weak entity by using a double-walled
entity.
optional - ANSWER✔️Participation is if one entity occurrence does not require a corresponding
entity occurrence in a particular relationship.
existence - ANSWER✔️A weak entity must be dependent.
recursive - ANSWER✔️If an employee within an EMPLOYEE entity has a relationship with
itself, that relationship is known as a relationship.
ternary - ANSWER✔️A relationship exists when three entities are associated.
minimum - ANSWER✔️When indicating cardinality, the first value represents the number of
associated entities.
primary key - ANSWER✔️The concept of relationship strength is based on how the of a related
entity is defined.
single-valued - ANSWER✔️A person's Social Security number would be an example of a(n)
attribute.
, dashed line - ANSWER✔️A derived attribute is indicated in the Chen notation by a that connects
the attribute and an entity.
composite - ANSWER✔️A attribute can be further subdivided to yield additional attributes.
anomalies - ANSWER✔️A table that displays data redundancies yields .
4NF (fourth normal form) - ANSWER✔️In the , no row may contain two or more multivalued
facts about an entity.
diagram - ANSWER✔️Dependencies can be identified with the help of a dependency .
DKNF - ANSWER✔️Of the following normal forms, is mostly of theoretical interest.
Data inconsistency - ANSWER✔️Data inconsistency exists when different versions of the same
data appear in different places.
application - ANSWER✔️A(n) application might be written by a programmer or it might be
created through a DBMS utility program.
Knowledge - ANSWER✔️Knowledge is the body of information and facts about a specific
subject.
semistructured - ANSWER✔️An XML database supports the storage and management of
semistructured XML data.
True - ANSWER✔️The only way to access the data in a database is through the DBMS.
multiuser - ANSWER✔️A workgroup database is a(n) multiuser database.
the data always yields consistent results. - ANSWER✔️Data is said to be verifiable if the data
always yields consistent results.
single-user - ANSWER✔️A desktop database is a single-user database.
Data integrity - ANSWER✔️Data integrity is defined as the condition in which all of the data in
the database are consistent with the real-world events and conditions.
False - ANSWER✔️Corporations use only structured data.
Extensible Markup Language (XML) - ANSWER✔️XML is a special language used to represent
and manipulate data elements in a textual format.
